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 Wysłany: Nie 5:16, 08 Maj 2011 Temat postu: Christian Louboutin Sub-structure interface connec |
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Sub-structure interface connection stiffness parameter identification of a direct method
ncesfromdy-nartllctestdate. TheShockandV [brationBulletin, l975; (45): 2432 PLATES LI Xiao Han. Method using dynamic model of optimal support stiffness parameter identification. Dumb Harbin University of aircraft mechanics and control theory,alexa mulberry taske, set ,1980,ropa ed hardy,103 -1153 husband Li Xiao Han, Yang Bingyuan. Structural Vibration Analysis of connection sub-structure. Journal of Astronautics, 1987; (1): 7 a l54 Yangbing Yuan, Song Wei force. Cabin separation surface missile test modeling and parameter identification method apply. Tactical missile technology, 1989,tory burch outlet, (2) :20-275 Song Wei force, Yang Bingyuan. He served for a body of hydraulic steering stiffness parameter identification. Strength and the Environment, 1992; (4) :1-56 Wang Fengquan,Christian Louboutin, when Chen Yu. Dynamic finite element model to determine the structure modal parameters of the boundary conditions method. In: Sixth National and Experimental Modal Analysis Conference Proceedings (in), 1991,37 l ~ 3777 the Jin Wu and so on. Using experimental modal data of a structural system supporting stiffness identify new methods. Vibration Engineering,abercrombie outlet, 1993; 6 (3) :238 -3448 Fung Hong. Numerical methods. Beijing: National Defence Industry Press ,1978,306-3l6ADirectMethodofParameterIdentificati0nforJoiningStiffnessOilSubstructureInterfacesYangBingyuanYangHuaSongZ (sthDesignDepartment, ShanghaiAcademyofSpaceflightTechnologyShanghai, 200233) AbstractInthisarticle, adirectmethodwhichidentifiesthejoiMngstiffnessonsubstructureinterfacesisproposedbytheinversionofcharacteristicequation. Thisnewmethodbasedonthecharacteristicequation'ofdynamicflexibilitymatrixresultsinanequationconcerningtheinternalforceoninterfaces. Theequationissolvedbasedonthestudyofdisplacementoftheinterfaces. Thedisplacementoftheunmeasurabledegrees-of-freedomontheinterfacescarlbeestimatedbyfittingthencompletemodalshapeofthemeasur-abledegreesoffreedomthroughmodalsuperposition. Thismethodissuitableforsortiecomplicatedeorilpoundstructuresinwhichseveralsubstructureshavenomeasurabledegreesoffreedom. Numericalsimula-t [onsandpracticalexamplesindicatethatthismethodhasgoodindentificafionprecisionandnumericalstabd [ty, whichneedsonlylittlecomputationandcomputermemory. Keywords: Substructure; interfaces; stiffness; parameterMenfificationcdynamicstructureanalysis Yang Bingyuan male first author, researcher, January 1943 Health
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